Speaking of the tangential tuned muffler I had a lot of complaints
saying it was impossible to weld so I came up with an idea
to make it easier. This is two inch tubing bent up on a 4 inch center
line radius with a six inch center can. Actually slightly less than
6 inch diameter. The can is fabed separately and holes cut and
it is slipped in to the pre welded spiral tubes. Bolt holes are matched
drilled and sheet metal screws are used to hold the can to the tube
flanges. The sheet metal screw heads are drilled and safety wired.

The outlet pipe is best brought out of the front of the can with
a 180 out the side of the cowl with an optional fish tail
to cut the noise further. No problem to fit this in to a wide
Schertz beam motor mount without the P51 type MM beam feature shown
here.

Paul Lamar

The tubes can spiral up (recommended) or spiral down.
The 12 inch long core can could favor the front or back of the engine.
One of Jerry's cooling tubes could be welded into the center
of the can and a 2-1/2 inch diameter down pipe could come out 
of almost anywhere. Here is the complete set of 3D's.

Is this buildable Ed?

Paul Lamar
 
The Rotary Engine NewsLetter.  Powered by Linux.
ACRE NL web site. http://home.earthlink.net/~rotaryeng/            
Copyright 1998-2004 All world wide rights reserved.